A wireless communication receiver and a wireless communication receiving method

Abstract

The application discloses a wireless communication receiver and a wireless communication receiving method. The receiver comprises a signal receiving circuit and a data processing circuit. The signal receiving circuit is used for receiving a wireless data packet transmitted by a remote device, wherein the wireless data packet comprises a preamble signal and a data signal. The signal receiving circuit comprises a transimpedance amplifier, a low-pass filter and an analog-to-digital converter connected in sequence. The transimpedance amplifier and the low-pass filter are configured in a wideband mode and a filtering mode. An input end of the data processing circuit is connected with an output end of the signal receiving circuit. The data processing circuit is further connected with the transimpedance amplifier and the low-pass filter. The data processing circuit is used for sending a control signal to switch the modes of the transimpedance amplifier and the low-pass filter. Compared with a conventional receiver, the application saves area and power and has more accurate signal strength estimation.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and in particular to a wireless communication receiver and a wireless communication receiving method. Background Technology

[0002] Wireless communication refers to a communication method that transmits information in space using electromagnetic waves (such as radio waves, microwaves, infrared rays, and visible light) without the need for physical media such as wires or cables. It enables long-distance wireless connections for data, voice, and images between devices and is widely used in mobile phones, satellite communications, wireless networks (Wi-Fi), Bluetooth, and the Internet of Things, greatly enhancing the flexibility and convenience of communication.

[0003] During wireless communication, the strength of the wireless signal propagating through the air fluctuates with increasing transmission distance. This fluctuation causes the signal strength to vary at different locations, thus affecting communication quality. To ensure accurate transmission of wireless signals, a wireless communication receiver is used to analyze the signal strength and adjust the receiver's gain accordingly to obtain the optimal signal-to-noise ratio (SNR). However, interference signals exist in wireless signals, which can degrade the receiver's SNR and even block the channel. Therefore, the receiver also needs to estimate the strength of the interference signal and adjust its gain accordingly to obtain a sufficient SNR.

[0004] Existing receivers adjust gain in two stages to avoid signal saturation and optimize SNR in order to obtain sufficient signal-to-noise ratio (SNR). First, a power detection circuit is added to the output of the RF front-end or transimpedance amplifier (TIA) to monitor the signal power in real time and adjust the RF front-end gain accordingly to prevent saturation. Then, the analog-to-digital converter (ADC) in the receiver link samples the signal, estimates the signal strength in the digital domain, and adjusts the gain of the programmable gain amplifier (PGA) to achieve the optimal SNR. However, implementing this approach requires the additional integration of a rectifier and ADC circuit. Adding these circuits increases area and power consumption, and the rectifier circuit has a significant power conversion error, which affects the accuracy of gain adjustment.

[0005] In the process of realizing this invention, the inventors discovered at least the following problems in the prior art:

[0006] Existing receivers, by adding rectifier and ADC circuits to achieve a sufficient signal-to-noise ratio, increase overall area and power consumption, and affect gain adjustment accuracy. Summary of the Invention

[0007] The purpose of this invention is to provide a wireless communication receiver and a wireless communication receiving method to solve the technical problem in the prior art where the addition of rectifier circuits and ADC circuits to the receiver in order to obtain a sufficient signal-to-noise ratio increases the overall area and power, and affects the gain adjustment accuracy.

[0008] The preferred technical solutions among the many technical solutions provided by this invention can produce a variety of technical effects, which are described in detail below.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] In a first aspect, the present invention provides a wireless communication receiver, comprising: a signal receiving circuit and a data processing circuit;

[0011] The signal receiving circuit is used to receive wireless data packets sent by a remote device, wherein the wireless data packets include a preamble signal and a data signal; the signal receiving circuit includes a transimpedance amplifier, a low-pass filter and an analog-to-digital converter connected in sequence, wherein the transimpedance amplifier and the low-pass filter are configured in wideband mode and filter mode respectively.

[0012] The input terminal of the data processing circuit is connected to the output terminal of the signal receiving circuit. The data processing circuit is also connected to the transimpedance amplifier and the low-pass filter. The data processing circuit is used to send control signals to switch the modes of the transimpedance amplifier and the low-pass filter.

[0013] When the signal receiving circuit receives the preamble signal, the transimpedance amplifier and the low-pass filter are in broadband mode. The preamble signal is quantized by the analog-to-digital converter and then output to the data processing module. After estimating the signal strength of the preamble signal, the data processing module sends a control signal to the transimpedance amplifier and the low-pass filter to switch them to filtering mode, so that the signal receiving circuit receives the data signal.

[0014] Optionally, the data processing circuit is used to adjust the gain of the receiver, wherein the gain includes radio frequency gain and intermediate frequency gain.

[0015] Optionally, when the signal receiving circuit receives the preamble signal in broadband mode, the data processing circuit is used to estimate the RF input power value of the preamble signal and obtain the RF gain based on the RF input power.

[0016] When the signal receiving circuit is in filtering mode, the data processing circuit is used to estimate the power of the in-band signal in the data signal and obtain the intermediate frequency gain based on the power of the in-band signal.

[0017] Optionally, the signal receiving circuit includes a transformation module, wherein the transformation module is a Fourier transform module;

[0018] When the signal receiving circuit receives the preamble signal in broadband mode, the conversion module obtains the in-band signal power, interference signal power, and frequency interval of the interference signal based on the preamble signal. The conversion module obtains the radio frequency gain and intermediate frequency gain based on the in-band signal power, interference signal power, and frequency interval of the interference signal.

[0019] Optionally, the transimpedance amplifier and the low-pass filter in the signal receiving circuit are used to receive the signal according to the RF gain and the IF gain, and to quantize the preamble signal and the data signal using an analog-to-digital converter.

[0020] Optionally, in filtering mode, the transimpedance amplifier acts as a first-order low-pass filter, forming an Nth-order low-pass filter together with the low-pass filter.

[0021] Optionally, the receiver further includes a front-end receiving circuit, the input of which is wirelessly connected to the remote device, and the output of which is connected to the signal receiving circuit. The front-end receiving circuit is used to receive wireless data packets sent by the remote device and forward the wireless data packets to the signal receiving circuit.

[0022] Optionally, the front-end receiving circuit includes a low-noise amplifier and a mixer connected in sequence. The low-noise amplifier is used to amplify the weak signal in the wireless data packet, and the mixer is used to perform frequency conversion on the signal in the wireless data packet.

[0023] Secondly, the present invention also provides a wireless communication receiving method, based on the wireless communication receiver described above, the method comprising:

[0024] The signal receiving circuit receives wireless data packets sent by a remote device, wherein the wireless data packets include a preamble signal and a data signal; the signal receiving circuit includes a transimpedance amplifier, a low-pass filter and an analog-to-digital converter connected in sequence, wherein the transimpedance amplifier and the low-pass filter are configured in wideband mode and filter mode respectively.

[0025] When the signal receiving circuit receives the preamble signal, the transimpedance amplifier and the low-pass filter are in broadband mode, and the preamble signal is quantized by the analog-to-digital converter and then output to the data processing module.

[0026] After estimating the signal strength of the preamble signal, the data processing module sets the radio frequency gain and intermediate frequency gain, and sends a control signal to the transimpedance amplifier and the low-pass filter to switch the transimpedance amplifier and the low-pass filter to filtering mode, so that the signal receiving circuit can receive the data signal.

[0027] Implementing one of the above-described technical solutions of the present invention has the following advantages or beneficial effects:

[0028] The wireless communication receiver described in this invention configures the transimpedance amplifier and low-pass filter in the signal receiving circuit into wideband and filtered modes, respectively, making the entire receiving process highly efficient and coordinated, and improving the stability of data transmission. Compared with traditional receivers, it saves area and power, and has more accurate signal strength estimation. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0030] Figure 1 This is a schematic diagram of the overall structure of the wireless communication receiver according to Embodiment 1 of the present invention;

[0031] Figure 2 This is a flowchart illustrating the wireless communication receiving method according to Embodiment 2 of the present invention;

[0032] In the diagram: 100, signal receiving circuit; 200, data processing circuit. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the present invention clearer, various exemplary embodiments described below will be referenced to the accompanying drawings, which form part of the exemplary embodiments, illustrating various exemplary embodiments that may be used to implement the present invention. Unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. It should be understood that they are merely examples of processes, methods, and apparatuses consistent with some aspects of the present invention disclosed as detailed in the appended claims, and other embodiments may be used, or structural and functional modifications may be made to the embodiments listed herein without departing from the scope and spirit of the present invention.

[0034] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," etc., indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the referred element must have a specific orientation, or be constructed and operated in a specific orientation. The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. The term "a plurality" means two or more. The terms "connected" and "linked" should be interpreted broadly, for example, they can refer to fixed connections, detachable connections, integral connections, mechanical connections, electrical connections, communication connections, direct connections, indirect connections through an intermediate medium, and can refer to the internal communication of two elements or the interaction relationship between two elements. The term "and / or" includes any and all combinations of one or more of the related listed items. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] To illustrate the technical solution described in this invention, specific embodiments are described below, showing only the parts related to the embodiments of this invention.

[0036] Example 1:

[0037] like Figure 1 As shown, the present invention provides a wireless communication receiver, including: a signal receiving circuit 100 and a data processing circuit 200; the signal receiving circuit 100 is used to receive wireless data packets sent by a remote device, wherein the wireless data packets include a preamble signal and a data signal; the signal receiving circuit 100 includes a transimpedance amplifier (TIA), a low-pass filter (LPF), and an analog-to-digital converter (ADC) connected in sequence, the transimpedance amplifier and the low-pass filter being configured in a wideband mode and a filtering mode; the input terminal of the data processing circuit 200 is connected to the output terminal of the signal receiving circuit 100, and the data processing... The data processing circuit 200 is also connected to the transimpedance amplifier and the low-pass filter. The data processing circuit 200 is used to send control signals to switch the modes of the transimpedance amplifier and the low-pass filter. When the signal receiving circuit 100 receives the preamble signal, the transimpedance amplifier and the low-pass filter are in broadband mode. The preamble signal is quantized by the analog-to-digital converter and then output to the data processing module. After estimating the signal strength of the preamble signal, the data processing module sends control signals to the transimpedance amplifier and the low-pass filter to switch the transimpedance amplifier and the low-pass filter to filtering mode, so that the signal receiving circuit 100 can receive the data signal.

[0038] Specifically, the wireless communication receiver consists of two core parts: a signal receiving circuit 100 and a data processing circuit 200. The signal receiving circuit 100 is specifically used to receive wireless data packets transmitted by remote devices. The wireless data includes preamble signals and data signals.

[0039] The signal receiving circuit 100 includes a transimpedance amplifier, a low-pass filter, and an analog-to-digital converter connected in series. The transimpedance amplifier converts the input radio frequency signal into a voltage signal, the low-pass filter filters out high-frequency noise interference, and the analog-to-digital converter performs precise quantization from analog to digital signals.

[0040] The transimpedance amplifier and low-pass filter are configured with two operating modes: wideband mode and filtering mode. Wideband mode provides a wider frequency response to capture rapidly changing signals (also known as preamble signals), while filtering mode facilitates the extraction of optimized signals (data signals).

[0041] The input terminal of the data processing circuit 200 is directly connected to the output terminal of the signal receiving circuit to receive the corresponding data output by the analog-to-digital converter. Simultaneously, the data processing circuit 200 is also connected to a transimpedance amplifier and a low-pass filter to dynamically generate and send control signals, enabling the switching between broadband and filtering modes of the transimpedance amplifier and the low-pass filter.

[0042] In other words, during the preamble signal reception phase, the transimpedance amplifier and low-pass filter of the signal receiving circuit 100 are automatically set to wideband mode to ensure rapid acquisition of the preamble signal. After quantization by the analog-to-digital converter, the preamble signal is output in digital form to the data processing circuit 200 for preliminary analysis. After the data processing circuit 200 completes the reception of the preamble signal and estimates its signal strength, it sends a control signal to the transimpedance amplifier and low-pass filter, switching them to filtering mode. Switching the transimpedance amplifier and low-pass filter to filtering mode optimizes the reception performance of the signal receiving circuit 100 for subsequent data signals, ensuring the integrity and accuracy of the data signal by enhancing noise suppression capabilities.

[0043] In this embodiment, the transimpedance amplifier and low-pass filter in the signal receiving circuit 100 are configured in wideband and filter modes, respectively, making the entire receiving process highly efficient and coordinated, and improving the stability of data transmission. Compared with traditional receivers, it saves area and power, and has more accurate signal strength estimation.

[0044] As an optional implementation, the data processing circuit 200 is used to adjust the gain of the receiver, wherein the gain includes radio frequency gain and intermediate frequency gain.

[0045] In this embodiment, the data processing circuit 200 has three functions: first, it can process the preamble signal and data signal in the wireless data packet; second, it can output a corresponding control signal according to the preamble signal to switch the transimpedance amplifier and low-pass filter to filtering mode; and third, it can set the gain of the receiver.

[0046] Specifically, in the signal receiving circuit 100, the transimpedance amplifier and the low-pass filter first operate in the broadband mode to receive the preamble signal. The preamble signal includes interference signals and in-band signals. Both the interference signals and the in-band signals will be converted into digital signals by the analog-to-digital converter for quantization. Subsequently, the data processing circuit 200 will dynamically adjust the gain of the receiver according to the actual power of the preamble signal to ensure that subsequent signal processing is carried out within a suitable power range, avoiding signals being too weak to be recognized or too strong resulting in distortion.

[0047] In this embodiment, there are two ways to adjust the receiver gain, which will be described in detail below.

[0048] The first way is that when the signal receiving circuit 100 receives the preamble signal in the broadband mode, the data processing circuit 200 is used to estimate the RF input power value of the preamble signal and obtain the RF gain according to the RF input power; when the signal receiving circuit 100 is in the filtering mode, the data processing circuit 200 is used to estimate the power of the in-band signal in the data signal to obtain the intermediate frequency gain.

[0049] Specifically, in the broadband mode, the receiver defaults to the maximum gain. If the data processing circuit 200 analyzes that the power exceeds the saturation threshold, the gain of the low-pass filter needs to be adjusted to 0 dB. If the power still exceeds the saturation threshold after adjustment, it means that the RF input power is too large, and the RF power needs to be adjusted to the minimum. At this time, the data processing circuit 200 will obtain a relatively accurate RF input power value P0. At this time, the RF gain G_rf can be set according to this power value, that is, satisfying G_rf The maximum gain when P0 < TIA_fullscale. After that, in the filtering mode, the signal receiving circuit 100 is used to receive the data signal. At this time, the data processing circuit 200 can calculate the power P1 of the in-band signal in the data signal at the input of the transimpedance amplifier. The data processing circuit 200 can set the gain G_if of the low-pass filter according to the power P1 of the in-band signal, that is, satisfying G_if The maximum gain when P1 < ADC_fullscale.

[0050] The second way is that the signal receiving circuit 100 includes a transformation module, where the transformation module is a Fourier transform module; when the signal receiving circuit 100 receives the preamble signal in the broadband mode, the transformation module obtains the in-band signal power, interference signal power, and frequency interval of the interference signal according to the preamble signal, and the transformation module obtains the RF gain and intermediate frequency gain according to the in-band signal power, interference signal power, and frequency interval of the interference signal.

[0051] Specifically, a Fourier transform can be added to the data processing circuit 200 to obtain the in-band signal power P3, the interference signal power P4, and the frequency interval of the interference signal at the RF input end. Based on this, the RF gain Grf and the IF gain Gif can be set一次性设置射频增益G_rf和中频增益G_if。根据带内信号功率P3、干扰信号功率P4和干扰信号的频率间隔设置增益的方法为:满足G_rf (P3 + P4) < TIA_fullscale, the maximum gain is the RF gain; after Grf is determined, satisfying Grf G_if P3 + Grf G_if Rej P4 < ADC_fullscale, the maximum gain is the IF gain.

[0052] More specifically, adding a Fourier transform to the data processing circuit 200 can convert the time-domain signal into the frequency domain, thereby separating the in-band signal and the interference signal, and obtaining their respective powers and frequency intervals. Based on these frequency-domain information, the RF gain and the IF gain can be optimized and set一次性优化设置射频增益和中频增益,以提升信号处理效率和抗干扰能力。

[0053] Compared with the first gain adjustment method, the second gain adjustment method directly adjusts the gain in the wideband mode and does not require power analysis in the filtering mode.

[0054] As an optional implementation, when the transimpedance amplifier and the low-pass filter in the signal receiving circuit 100 are in the filtering mode, the signal receiving circuit 100 receives the data signal according to the gain of the receiver, and the in-band signal in the data signal is quantized by the analog-to-digital converter.

[0055] Specifically, after the signal receiving circuit 100 finishes receiving the preamble signal, the data processing circuit 200 will send a control signal to switch the transimpedance amplifier and the low-pass filter in the signal receiving circuit 100 to the filtering mode to prepare for receiving the data signal in the wireless data packet. When the signal receiving circuit 100 receives the data signal, it receives the data signal according to the gain of the receiver, and the in-band signal located in the set frequency band in the data signal will be quantized by the analog-to-digital converter for subsequent analysis and processing.

[0056] As an optional implementation, in filtering mode, the transimpedance amplifier acts as a first-order low-pass filter, forming an Nth-order low-pass filter together with the low-pass filter. Specifically, in this embodiment, in filtering mode, the transimpedance amplifier acts as a first-order low-pass filter, while the low-pass filter is an N-1 order low-pass filter. Since both the transimpedance amplifier and the low-pass filter operate in narrowband mode when in filtering mode, the transimpedance amplifier acts as a first-order low-pass filter, working in conjunction with the N-1 order low-pass filter to form a complete Nth-order low-pass filter. In filtering mode, the transimpedance amplifier and the low-pass filter can precisely control the bandwidth, ensuring that only data signals within the set frequency band are allowed to pass, effectively suppressing out-of-band interference and noise, facilitating accurate power analysis and interference calculation of the data signal by subsequent data circuits. Furthermore, selecting an N-1 order low-pass filter further saves space.

[0057] In this embodiment, the data processing circuit 200 is a rectifier circuit.

[0058] As an optional implementation, the receiver further includes a front-end receiving circuit. The input of the front-end receiving circuit is wirelessly connected to the remote device, and the output is connected to the signal receiving circuit 100. The front-end receiving circuit is used to receive wireless data packets sent by the remote device and forward the wireless data packets to the signal receiving circuit 100. The front-end receiving circuit includes a low-noise amplifier and a mixer connected in sequence. The low-noise amplifier is used to amplify the weak signal in the wireless data packet, and the mixer is used to perform frequency conversion on the signal in the wireless data packet.

[0059] Specifically, the receiver also includes a front-end receiving circuit. The input of this circuit is connected to the remote device via an antenna, and the output is directly connected to the signal receiving circuit 100. The main function of the front-end receiving circuit is to receive the wireless data packets sent by the remote device and efficiently forward the data in the wireless data packets to the signal receiving circuit 100 for decoding and processing.

[0060] In this embodiment, the front-end receiving circuit consists of a low-noise amplifier (LNA) and a mixer connected in sequence. The LNA amplifies the weak signals in the wireless data packets to significantly enhance the signal amplitude and minimize noise interference, thereby improving the overall sensitivity and reliability of the receiver. The mixer performs frequency conversion on the amplified signal, such as down-converting the original high-frequency signal to the intermediate frequency range, so that the subsequent filtering, amplification, and demodulation processes of the signal receiving circuit 100 are more stable and accurate.

[0061] As an optional implementation, the signal receiving circuit 100 includes an I-channel receiving circuit and a Q-channel receiving circuit. Specifically, the signal receiving circuit 100 includes an I-channel receiving circuit and a Q-channel receiving circuit, the purpose of which is to improve spectral efficiency, simplify the signal processing flow, and enhance the anti-interference capability of the signal receiving circuit 100 through orthogonality.

[0062] In this embodiment, in broadband mode, the transimpedance amplifier and low-pass filter in the signal receiving circuit 100 receive the preamble signal, and the analog-to-digital converter quantizes the interference signal and in-band signal in the preamble signal. The data processing circuit 200 detects the signal power of the preamble signal in real time and dynamically adjusts the receiver's gain parameters based on the power value to optimize the signal dynamic range and reduce distortion. Next, after gain adjustment, the receiver automatically switches to filtering mode, and the transimpedance amplifier and low-pass filter receive the data signal according to the adjusted gain. The analog-to-digital converter accurately quantizes the in-band signal in the data signal to ensure high-fidelity data conversion. Subsequently, the data processing circuit 200 reliably processes the quantized data signal. Throughout this process, mode switching is automatically triggered based on the preamble signal power detection result, which improves reception efficiency.

[0063] The embodiment is merely a specific example and does not indicate that this is the only way to implement the present invention.

[0064] Example 2:

[0065] like Figure 2 As shown, the present invention also provides a wireless communication receiving method, based on the wireless communication receiver of Embodiment 1, the method comprising:

[0066] S10, The signal receiving circuit receives wireless data packets sent by a remote device, wherein the wireless data packets include a preamble signal and a data signal; the signal receiving circuit includes a transimpedance amplifier, a low-pass filter and an analog-to-digital converter connected in sequence, and the transimpedance amplifier and the low-pass filter are configured in wideband mode and filter mode respectively.

[0067] S20. When the signal receiving circuit receives the preamble signal, the transimpedance amplifier and low-pass filter are in broadband mode. The preamble signal is quantized by the analog-to-digital converter and then output to the data processing module.

[0068] S30: After estimating the signal strength of the preamble signal, the data processing module sets the RF gain and IF gain, and sends control signals to the transimpedance amplifier and low-pass filter to switch the transimpedance amplifier and low-pass filter to filtering mode, so that the signal receiving circuit can receive the data signal.

[0069] In this embodiment, the wireless communication receiving method first requires executing step S10, whereby the signal receiving circuit receives a wireless data packet sent by a remote device. The wireless data packet includes a preamble signal and a data signal. The signal receiving circuit includes a transimpedance amplifier, a low-pass filter, and an analog-to-digital converter connected in sequence. The transimpedance amplifier and low-pass filter are configured in wideband mode and filtered mode, respectively. Specifically, the wireless data packet includes a preamble signal and a data signal. The preamble signal is used for synchronization and channel estimation, while the data signal carries valid information. The signal receiving circuit includes a transimpedance amplifier, a low-pass filter, and an analog-to-digital converter connected in sequence. The transimpedance amplifier and low-pass filter are configured in wideband mode and filtered mode, respectively. The wideband mode provides high bandwidth to capture rapidly changing signals, while the filtered mode optimizes noise suppression to improve signal quality.

[0070] More specifically, the signal receiving circuit receives wireless data packets transmitted by the remote device through the front-end receiving circuit. The front-end receiving circuit includes a low-noise amplifier and a mixer connected in sequence. The low-noise amplifier amplifies the weak signals in the wireless data packets to significantly enhance signal amplitude and minimize noise interference, thereby improving the overall sensitivity and reliability of the receiver. The mixer performs frequency conversion on the amplified signal, such as down-converting the original high-frequency signal to the intermediate frequency range, to ensure more stable and accurate subsequent filtering, amplification, and demodulation processes in the signal receiving circuit.

[0071] In this embodiment, the input terminal of the data processing circuit is connected to the output terminal of the signal receiving circuit, and the data processing circuit is also connected to the transimpedance amplifier and the low-pass filter. The input terminal of the data processing circuit is directly connected to the output terminal of the signal receiving circuit to receive the quantized signal in real time. Simultaneously, the data processing circuit is connected to the transimpedance amplifier and the low-pass filter to send control signals, thereby enabling mode switching of the transimpedance amplifier and the low-pass filter.

[0072] Subsequently, steps S20 and S30 are executed. When the signal receiving circuit receives the preamble signal, the transimpedance amplifier and low-pass filter are in broadband mode. The preamble signal is quantized by the analog-to-digital converter and output to the data processing module. After estimating the signal strength of the preamble signal, the data processing module sets the RF gain and IF gain and sends control signals to the transimpedance amplifier and low-pass filter to switch the transimpedance amplifier and low-pass filter to filtering mode, so that the signal receiving circuit can receive the data signal.

[0073] Specifically, when receiving the preamble signal, the transimpedance amplifier and low-pass filter are automatically set to wideband mode to ensure full-band capture of the preamble signal. The preamble signal is then quantized with high precision by the analog-to-digital converter and output to the data processing module. After estimating the signal strength of the preamble signal, the data processing module sets the RF gain and IF gain and generates control signals to send to the transimpedance amplifier and low-pass filter, enabling them to quickly switch to filtering mode. This allows for efficient reception of data signals in a low-noise environment and improves the reliability of data transmission.

[0074] As an optional implementation, when the transimpedance amplifier and low-pass filter in the signal receiving circuit receive the preamble signal in wideband mode, the interference signal and in-band signal in the preamble signal are quantized by the analog-to-digital converter (ADC), and the data processing circuit estimates the signal power of the preamble signal and adjusts the receiver gain. When the transimpedance amplifier and low-pass filter in the signal receiving circuit receive the data signal in filtered mode, the data signal is received according to the receiver gain, and the in-band signal in the data signal is quantized by the ADC. Specifically, in the signal receiving circuit, the transimpedance amplifier and low-pass filter can be set to wideband mode or filtered mode to adapt to different signal types. When operating in wideband mode, the circuit is used to receive the preamble signal; at this time, the interference signal and in-band signal contained in the preamble signal are digitally quantized by the ADC. The data processing circuit then detects the signal power of the preamble signal and dynamically adjusts the receiver gain according to the power value to optimize the signal dynamic range and reduce distortion. When switched to filtering mode, the transimpedance amplifier and low-pass filter are used to receive the data signal. At this time, the receiver receives the data signal according to the adjusted gain parameters. The in-band signal in the data signal is also accurately quantized by the analog-to-digital converter to ensure reliable data conversion and subsequent processing.

[0075] The above description is merely a preferred embodiment of the present invention. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A wireless communication receiver, characterized in that, include: Signal receiving circuit and data processing circuit; The signal receiving circuit is used to receive wireless data packets sent by a remote device, wherein the wireless data packets include a preamble signal and a data signal; the signal receiving circuit includes a transimpedance amplifier, a low-pass filter and an analog-to-digital converter connected in sequence, wherein the transimpedance amplifier and the low-pass filter are configured in wideband mode and filter mode respectively. The input terminal of the data processing circuit is connected to the output terminal of the signal receiving circuit. The data processing circuit is also connected to the transimpedance amplifier and the low-pass filter. The data processing circuit is used to send control signals to switch the modes of the transimpedance amplifier and the low-pass filter. When the signal receiving circuit receives the preamble signal, the transimpedance amplifier and the low-pass filter are in broadband mode. The preamble signal is quantized by the analog-to-digital converter and then output to the data processing circuit. After estimating the signal strength of the preamble signal, the data processing circuit sends a control signal to the transimpedance amplifier and the low-pass filter to switch them to filtering mode, so that the signal receiving circuit receives the data signal.

2. The wireless communication receiver according to claim 1, characterized in that, The data processing circuit is used to adjust the gain of the receiver, wherein the gain includes radio frequency gain and intermediate frequency gain.

3. The wireless communication receiver according to claim 2, characterized in that, When the signal receiving circuit receives the preamble signal in broadband mode, the data processing circuit is used to estimate the RF input power value of the preamble signal and obtain the RF gain based on the RF input power. When the signal receiving circuit is in filtering mode, the data processing circuit is used to estimate the power of the in-band signal in the data signal and obtain the intermediate frequency gain based on the power of the in-band signal.

4. The wireless communication receiver according to claim 2, characterized in that, The signal receiving circuit includes a transformation module, wherein the transformation module is a Fourier transform module; When the signal receiving circuit receives the preamble signal in broadband mode, the conversion module obtains the in-band signal power, interference signal power, and frequency interval of the interference signal based on the preamble signal. The conversion module obtains the radio frequency gain and intermediate frequency gain based on the in-band signal power, interference signal power, and frequency interval of the interference signal.

5. The wireless communication receiver according to claim 2, characterized in that, The transimpedance amplifier and the low-pass filter in the signal receiving circuit are used to receive signals according to the RF gain and IF gain, and to quantize the preamble signal and the data signal using an analog-to-digital converter.

6. The wireless communication receiver according to claim 1, characterized in that, In filtering mode, the transimpedance amplifier acts as a first-order low-pass filter, forming an Nth-order low-pass filter together with the low-pass filter.

7. The wireless communication receiver according to claim 1, characterized in that, The receiver also includes a front-end receiving circuit. The input of the front-end receiving circuit is wirelessly connected to the remote device, and the output is connected to the signal receiving circuit. The front-end receiving circuit is used to receive wireless data packets sent by the remote device and forward the wireless data packets to the signal receiving circuit.

8. The wireless communication receiver according to claim 7, characterized in that, The front-end receiving circuit includes a low-noise amplifier and a mixer connected in sequence. The low-noise amplifier is used to amplify the weak signals in the wireless data packets, and the mixer is used to perform frequency conversion on the signals in the wireless data packets.

9. A wireless communication receiving method, characterized in that, Based on the wireless communication receiver according to any one of claims 1-8, the method includes: The signal receiving circuit receives wireless data packets sent by a remote device, wherein the wireless data packets include a preamble signal and a data signal; the signal receiving circuit includes a transimpedance amplifier, a low-pass filter and an analog-to-digital converter connected in sequence, wherein the transimpedance amplifier and the low-pass filter are configured in wideband mode and filter mode respectively. When the signal receiving circuit receives the preamble signal, the transimpedance amplifier and the low-pass filter are in broadband mode, and the preamble signal is quantized by the analog-to-digital converter and then output to the data processing circuit. After estimating the signal strength of the preamble signal, the data processing circuit sets the radio frequency gain and the intermediate frequency gain, and sends a control signal to the transimpedance amplifier and the low-pass filter to switch the transimpedance amplifier and the low-pass filter to the filtering mode, so that the signal receiving circuit can receive the data signal.

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